AS28573 181.217.40.0/21 CIDR and IP Range Summary.ASN: 28573 - Claro NXT Telecomunicacoes LtdaHost Count: 2046Addressable IPs: 2048181.217.40.0/24181.217.41.0/24181.217.42.0/24181.217.43.0/24181.217.44.0/24181.217.45.0/24181.217.46.0/24181.217.47.0/24